It's about time these cars start running what they should. I knew it would happen once the cooler weather came in. Gotta luv that mph too. No doubt an 11 second car with a little better 60' and possibly some better air.

I don't think the GT500s are really concerned about the ZL's in the 1/4. It really isn't even a contest...nor should it be. The hp/weight advantage the GT500 has is just too much to overcome.

Either way, both cars are extremely fast...and probably a bit too much hp for the average driver to handle...

It's about time these cars start running what they should. I knew it would happen once the cooler weather came in. Gotta luv that mph too. No doubt an 11 second car with a little better 60' and possibly some better air.

I don't think the GT500s are really concerned about the ZL's in the 1/4. It really isn't even a contest...nor should it be. The hp/weight advantage the GT500 has is just too much to overcome.

Either way, both cars are extremely fast...and probably a bit too much hp for the average driver to handle...

Finding the sweet spot for launching this thing is a pain. I started to get it last night but it was getting late and I had an hour drive home. I want to go down with a little better air and see what I can do.

Finding the sweet spot for launching this thing is a pain. I started to get it last night but it was getting late and I had an hour drive home. I want to go down with a little better air and see what I can do.

I'm all ears... did you use launch control or not. I know you used PTM5 but have you tried All Off yet?

pretty impressive. A couple more times and I bet you will break into the 11's congrats. That would be something to brag about for sure to be the first bone stock ZL1 in the 11's. That wasn't from Chevy that is.

What RPM were you launching at? And we're you gradually getting on the throttle to avoid slipping? My local track hasn't been open since I've had mine!

All traction control off. The sweet spot I found for conditions was about 3800 rpm. I didn't care about R/T because that doesn't matter in a test and tune night in which I wasn't running any heads up rounds. I personally hold the e-brake up to keep from rolling, hold throttle around 3800 rpm, when I am ready to go, I start slipping the clutch until it starts to bite and then release clutch (not drop it) and throttle accordingly to minimize wheel spin. It worked pretty well. I also do the no lift shift personally.

Quote:

Originally Posted by mlee

I'm all ears... did you use launch control or not. I know you used PTM5 but have you tried All Off yet?

See above. I tried PTM5 and it doesn't work as well as chevy advertises. Like I said earlier, I have done about 25 or so passes and used PTM5 for some of the early runs and it worked decent but it wasn't consistent. I would get too much wheel spin or bog. It could never get a great launch hence why I got fed up with it and turned all modes off and did it old school. HAHA

Quote:

Originally Posted by pdari

Man, you can flat out drive. Congrats on the great runs.

Thanks, I consider myself a decent driver, but lots of room for improvement. I have drag raced quite a bit over the years.

Quote:

Originally Posted by gearhead08

pretty impressive. A couple more times and I bet you will break into the 11's congrats. That would be something to brag about for sure to be the first bone stock ZL1 in the 11's. That wasn't from Chevy that is.

That is my new goal since I hit below a lot of the published times for a 6mt. I think she can do it if I can get 1.8 or better 60'

Quote:

Originally Posted by Bob Cosby

That's definately more like it!

And gotta love Cecil County...easily one of the fastest tracks in the country, REGARDLESS of car make, model, or year!

I love Cecil. It is one of the best tracks. Maple is great for prep and watching top fuel cars, but Cecil is the best track for times. Hopefully come October or early November there will be some negative DA days.

Goal is 11's all stock and I know it has it in her. PGM 5 was useless for launching. I had to do it the old fashioned way and use skill. PGM 5 is good, but it isn't consistent like GM says it is.

I am with you there on the launch control. I am trying to go around it. Could you help me with a question?. I am trying not to use LC. LC comes on in any mode of PTM. What settings are you using? I have tried to launch the car from a standing start in less than throttle to the floor with every mode of PTM on. The car cuts out and noses over when the tires stop spinning, then cuts back in...as if the fuel shuts off and back on. In LC when I floor it and hold it as described, the throttle holds to 4 grand and and launches normally through tire spin then full traction without issues as advertised. I can launch the car at any RPM only in Tour or Sport mode with no PTM mode selected. Can you tell me how you are launching yours? I am trying to determine whether or not I have a problem with the electronics in my PTM system. Thanks in advance.

I am with you there on the launch control. I am trying to go around it. Could you help me with a question?. I am trying not to use LC. LC comes on in any mode of PTM. What settings are you using? I have tried to launch the car from a standing start in less than throttle to the floor with every mode of PTM on. The car cuts out and noses over when the tires stop spinning, then cuts back in...as if the fuel shuts off and back on. In LC when I floor it and hold it as described, the throttle holds to 4 grand and and launches normally through tire spin then full traction without issues as advertised. I can launch the car at any RPM only in Tour or Sport mode with no PTM mode selected. Can you tell me how you are launching yours? I am trying to determine whether or not I have a problem with the electronics in my PTM system. Thanks in advance.

What I have noticed with PTM 5 is that it does let wheel spin like Traction Control 5 but if the car starts to kick out, it kills power. I really thought it wasn't supposed to intervene at all on PTM5 other than hold the rpm for launch control and help limit wheel spin from a dig. I can't speak for PTM1-4 because I have never used them yet.

To turn the traction control completely off, you need to press and hold the "traction control" button for about 7-10 seconds. Once it is off completely, both lights will be on showing TC off and the slip light on. You will still have either "tour" or "sport" light on the buttons. This will show you that all systems are disabled.

That is how I turn it all off to launch. See my above post about the process I use for launching. Hope it helps!